Malicious PDF — malware analysis report

Static analysis result for SHA-256 07042cad8145214b…

MALICIOUS

PDF

70.1 KB Created: 2021-02-17 09:38:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: dad838d00f17d3e3b83fbaac49549fbd SHA-1: ec59d1e3eebbe1e9164f7da20ce577f668af33a3 SHA-256: 07042cad8145214bdb37088ad0117ae4b2d00e872e682365d80ae92f13f5276e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded URLs, many pointing to disposable hosting and link farms, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of many unknown reputation URLs suggest the document is designed to redirect users to malicious sites, likely for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://leonvi.ru/wix?keyword=euroflex+monster+steam+cleaner+instructions PDF link annotation
    • http://believes.space/jarojidofurulevel3jec.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/Ggf0t8b/70887619574.pdfIn PDF document text
    • https://cdn.sqhk.co/suxavawudomo/YlyBjgX/sustainable_development_goals_sdg_index_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/wifepodilojo/63hfhca/28606865643.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/Kq3Tjdb/gasawof.pdfIn PDF document text
    • http://lovelid.xyz/bc_rental_agreement_formkjkrd.pdfIn PDF document text
    • https://cdn.sqhk.co/talurelope/irgiALB/zixosinel.pdfIn PDF document text
    • http://cherrypimp.online/9554037748722c0r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mizeteb/boult_tru5ive_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/70021283128.pdfIn PDF document text
    • http://gesasodalunaka.epizy.com/composite_materials_ppt_report.pdfIn PDF document text
    • http://kiroxivox.epizy.com/battlefield_1_pc_code.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/mupud.pdfIn PDF document text
    • http://rakulewozagax.rf.gd/nesexomadorusevitibazagi.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/66230973319.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D1 5052 bytes
SHA-256: 3c6547289fba780e129d7dbec169bb8e4f50ece9b1b3a5b88784eb26f1c04bd8
font_01_sfnt_off0000e3f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F0 10872 bytes
SHA-256: 39c023001e30bd4fb3a244c7422ae914828c254d333c0608d1472af4f5e57f84

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